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69412321 = 1123274357
BaseRepresentation
bin1000010001100…
…10010111100001
311211121111210201
410020302113201
5120232143241
610515425201
71501665166
oct410622741
9154544721
1069412321
11361aa560
121b2b5201
13114c41a4
14930c06d
156161931
hex42325e1

69412321 has 8 divisors (see below), whose sum is σ = 79015104. Its totient is φ = 60358320.

The previous prime is 69412313. The next prime is 69412337. The reversal of 69412321 is 12321496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69412321 - 23 = 69412313 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69412321.

It is not an unprimeable number, because it can be changed into a prime (69412121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136926 + ... + 137431.

It is an arithmetic number, because the mean of its divisors is an integer number (9876888).

Almost surely, 269412321 is an apocalyptic number.

It is an amenable number.

69412321 is a deficient number, since it is larger than the sum of its proper divisors (9602783).

69412321 is a wasteful number, since it uses less digits than its factorization.

69412321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274391.

The product of its digits is 2592, while the sum is 28.

The square root of 69412321 is about 8331.4057037213. The cubic root of 69412321 is about 410.9719573655.

The spelling of 69412321 in words is "sixty-nine million, four hundred twelve thousand, three hundred twenty-one".

Divisors: 1 11 23 253 274357 3017927 6310211 69412321